Shares of Interpublic rose 7 percent in premarket trading on Tuesday, after second-quarter results showed that the New York firm is benefiting from higher client spending and grabbing market share from rivals.

Organic revenue at Interpublic, home to Madison Avenue’s iconic McCann agency, climbed 5.6 percent in the second quarter of 2018, growing at twice the pace analysts on average had expected, according to Thomson Reuters I/B/E/S.

“We had highlighted IPG as one of our few companies under coverage that had the potential to beat estimates, but we are surprised at the extent,” analysts at Jefferies said. “Organic growth ... will be about 500 basis points ahead of peers, a level we haven’t seen historically.”

U.S.-based Omnicom reported disappointing earnings for the second quarter, while Publicis saw a surprise drop in organic revenue. Results from Britain’s WPP (WPP.L), another “Big Four” traditional ad firm, are expected in September.

Interpublic, which counts Microsoft, Google (GOOGL.O) and Coca-Cola among its biggest clients, also increased its annual target for organic net revenue growth to a range of 4 percent to 4.5 percent.

“Our organic revenue growth is an encouraging signal that certain marketers have, in fact, return to growth mode in their engagements with us,” Interpublic Chief Executive Officer Michael Roth said on a conference call with analysts.

The results come as Interpublic and other ad firms seek new ways to compete better with Google and Facebook (FB.O), which have transformed the industry in recent years by reaching much larger audiences through online advertising.